Developers registered 165 projects across 12 regions, including the Aragón region hosting 80 projects, with 25 in Galicia, 20 in both Castile and Leon, and 13 in Castile-La Mancha.
Some developers employed an auction rule allowing registration of up to 50% above their allocation, in case some projects fall through -- Gas Natural Fenosa registered 854MW against its 667MW allocation.
Fellow utility Endesa, through affiliate Enel Green Power España, registered 810MW against 540MW allocated.
Aragón will host all of developer Forestalia's 50 projects totalling 1.2GW, the biggest single allocation.
All projects have a 2020 build-out deadline; otherwise developers may lose their €20,000/MW deposits.
Most projects were mature and "ready to go" before Spain's renewables' moratorium took hold in 2012, according to Juan Virgilio, CEO of Spanish wind energy association AEE.
Registration concludes the matchmaking rush between companies winning capacity rights and those holding mature developing rights.
The need for registration, with its February deadline, corrects a ministry error in failing to demand project specifics in the first auction in January 2016, which allocated 500MW of wind capacity, still largely unidentified.
Registration of individual projects in the third auction celebrated May 2017, with 1,128MW allocated, must be complete by April 2018.
